nukeReferences: fix code signatures on aarch64-darwin

pkgs/build-support/nuke-references/builder.sh

···
-source $stdenv/setup
-
-mkdir -p $out/bin
-cat > $out/bin/nuke-refs <<EOF
-#! $SHELL -e
-
-excludes=""
-while getopts e: o; do
-    case "\$o" in
-        e) storeId=\$(echo "\$OPTARG" | $perl/bin/perl -ne "print \"\\\$1\" if m|^\Q$NIX_STORE\E/([a-z0-9]{32})-.*|")
-           if [ -z "\$storeId" ]; then
-               echo "-e argument must be a Nix store path"
-               exit 1
-           fi
-           excludes="\$excludes(?!\$storeId)"
-        ;;
-    esac
-done
-shift \$((\$OPTIND-1))
-
-for i in "\$@"; do
-    if test ! -L "\$i" -a -f "\$i"; then
-        cat "\$i" | $perl/bin/perl -pe "s|\Q$NIX_STORE\E/\$excludes[a-z0-9]{32}-|$NIX_STORE/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-|g" > "\$i.tmp"
-        if test -x "\$i"; then chmod +x "\$i.tmp"; fi
-        mv "\$i.tmp" "\$i"
-    fi
-done
-EOF
-chmod +x $out/bin/nuke-refs

pkgs/build-support/nuke-references/darwin-sign-fixup.sh

···
+# Fixup hook for nukeReferences, not stdenv
+
+source @signingUtils@
+
+fixupHooks+=(signIfRequired)

pkgs/build-support/nuke-references/default.nix

···
 # path (/nix/store/eeee...).  This is useful for getting rid of
 # dependencies that you know are not actually needed at runtime.
 
-{ stdenvNoCC, perl }:
+{ lib, stdenvNoCC, perl, signingUtils, shell ? stdenvNoCC.shell }:
+
+let
+  stdenv = stdenvNoCC;
+
+  darwinCodeSign = stdenv.targetPlatform.isDarwin && stdenv.targetPlatform.isAarch64;
+in
 
 stdenvNoCC.mkDerivation {
   name = "nuke-references";
-  builder = ./builder.sh;
+
+  dontUnpack = true;
+  dontConfigure = true;
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/bin
+    substituteAll ${./nuke-refs.sh} $out/bin/nuke-refs
+    chmod a+x $out/bin/nuke-refs
+  '';
+
+  postFixup = lib.optionalString darwinCodeSign ''
+    mkdir -p $out/nix-support
+    substituteAll ${./darwin-sign-fixup.sh} $out/nix-support/setup-hooks.sh
+  '';
+
   # FIXME: get rid of perl dependency.
   inherit perl;
+  inherit (builtins) storeDir;
+  shell = lib.getBin shell + (shell.shellPath or "");
+  signingUtils = if darwinCodeSign then signingUtils else null;
 }

pkgs/build-support/nuke-references/nuke-refs.sh

···
+#! @shell@
+
+fixupHooks=()
+
+if [ -e @out@/nix-support/setup-hooks.sh ]; then
+    source @out@/nix-support/setup-hooks.sh
+fi
+
+excludes=""
+while getopts e: o; do
+    case "$o" in
+        e) storeId=$(echo "$OPTARG" | @perl@/bin/perl -ne "print \"\$1\" if m|^\Q@storeDir@\E/([a-z0-9]{32})-.*|")
+           if [ -z "$storeId" ]; then
+               echo "-e argument must be a Nix store path"
+               exit 1
+           fi
+           excludes="$excludes(?!$storeId)"
+        ;;
+    esac
+done
+shift $(($OPTIND-1))
+
+for i in "$@"; do
+    if test ! -L "$i" -a -f "$i"; then
+        cat "$i" | @perl@/bin/perl -pe "s|\Q@storeDir@\E/$excludes[a-z0-9]{32}-|@storeDir@/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-|g" > "$i.tmp"
+        if test -x "$i"; then chmod +x "$i.tmp"; fi
+        mv "$i.tmp" "$i"
+
+        for hook in "${fixupHooks[@]}"; do
+            eval "$hook" "$i"
+        done
+    fi
+done

pkgs/top-level/all-packages.nix

···
 
   replaceDependency = callPackage ../build-support/replace-dependency.nix { };
 
-  nukeReferences = callPackage ../build-support/nuke-references { };
+  nukeReferences = callPackage ../build-support/nuke-references {
+    inherit (darwin) signingUtils;
+  };
 
   referencesByPopularity = callPackage ../build-support/references-by-popularity { };